| 摘要 |
PROBLEM TO BE SOLVED: To provide a furnace for ceramics capable of preventing heat loss. SOLUTION: Close contact of a heat-insulating material 251-253 with a fringe of an in-and-out part 12 is maintained by making the material 251-253 adjacent to a door 20 come in resilient contact with the part 12 of the furnace 10 utilizing energizing force by a compressive spring 24, even if contraction, strain and crack occur in the material 251-253 after long use, as a result that heat radiation of the furnace 10 in driving is controlled. |
